Method for providing recovery from a failure in a system utilizi

Details Method for providing recovery from a failure in a system utilizi Method for providing recovery from a failure in a system utilizi

1995-01-23

1998-11-03

Palys, Joseph

39518217, 39518214, G06F 1100

Patent

active

058322035

ABSTRACT:
An improved recovery method utilizes sequence numbers to order log records and reduce the excess compensating actions due to a failure during recovery. Next undo records are written to the log after a preset number of compensating actions which include the sequence number of the record currently being scanned. After a failure, all records between the next undo record and the record having the sequence number included in the next undo record are ignored during when the log is scanned backwards.

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patent: 5561795 (1996-10-01), Sarkar
"ARIES: A Transaction Recovery Method Supporting Fine-Granularity Locking and Partial Rollbacks Using Write-Ahead Logging," C. Mohan et al., Computer Science, Jan. 23, 1998.

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